Tobacco-pipe stem.



G..W. BOWERS. TOBACCO PIPE STEM. APPLIGATIQN FILED my. 15, 190e.

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Patented Mar. 23, 1909.

GEORGE W. BOWERS, OF SOMERVILLE7 MASSACHUSETTS.

TOBACCO-PIPE STEM.

t Specification of Letters Patent.

Patented March 23, 1909.

Application filed February 15, 1908. Serial No. 416,030.

To all whom it 'rr-Lay4 concern:

Be it known that I, GEORGE W. Bow-ERS,

' of Somerville, in the county of Middlesex and State of Massachusetts, haveinvented certain new and useful Improvements" in Tobecco-Pipe Stems, of which the following is specification. f

This invention relates to a tobacco pipe stem, the body ofwhich is composed of longitudinal sections, which are separable from each other, and from the pipe bowl, in order that the smoke duct which is formed between said sections, may be Vreadily exposed for cleansing purposes.

The invention has for its-object to provide a stem of this character of simple and durable construction, and ada ted to haveits parts conveniently and quicllily separated and assembled, and adapted, when inv condition for use, to be readily appliedto and removed from the pipe-bowL'the number of parts of the stem being reduced to the minimum,

The invention consistsv Ain the improvements which I will now proceed to describe and clalm.

Of the accompanying drawings, forming-a, part of this speoificatiom-Figure "1 repre-- sents a side elevation of a pi e having a stem embodying my invention.

` iig. 2 represents a longltudmal section of the stem. Fig. 3

represents a transverse section online 3 3 of Fig. 2.

Fig. 4 represents a side view of a modiiied form of stem embodying my invention. Fig. 5 re resents a view similar to Fig. 3, showlng a sp it sleeve. Fig. 6 represents a view similar to Fig. 3, 'showing a modication in the form of the meeting faces of the stem sections. Fig. 7 represents a sectional view of a portion of the'stem, showing a screw thread on the end or shank whichengages the bowl, Fig. 8 represents a perspective view of one of the stem sections. Fig. 9 represents a perspective view of the complete stem shown -1n Figs. 1 and 2. Fig. 10 represents a modification hereinafter referred to. l

The same numerals of reference indicat the same partsin all'the figures.

In carrying out my invention, I construct a pipe stem of the Afollowing general parts;

viz., a plurality of separable sections 12 12,

'forming thebody of the stem,'and a single elongated sleeve or binder 13 adapted to embrace said sections and hold them properly and closely related to each other with uniformity throughout practically the entire length of the stem. One end which is not inclosed by the binder is held by the bowl of the pipe, and the other end by the mouth of the user. The number of sections is preferably two, but three or more sections may be em loyed.

he sections 12 may be made of hard rubl ber, hard lwood or any other suitable material, and they are of such form that when assembled, they constitute a stem or stem body having a tapering external surface occupying the greaterv portion of the length of the stem. The inner side of each section 12, shown in Figs. 1, 2, 3, 4, 8 and 9, is flat,

. and one or both of said fiat sides is provided with a longitudinal groove 15 extending from end to end of the stem, and forming a smoke duct, the flat surfaces of the sections constituting opposed reciprocal bearing faces 14 which are in close contact with each other to form smoke-tight joints.

The sleeve 13 is internally tapered to fit the externalta er of the stem, so that the sleeve when forces smaller toward the larger end, will vclamp the sections ofthe stem closely together, andV cause thebearing faces 14 to form .tight joints. The sleeve 13 is shorter than the stem body, and is so proportioned that when in its clamping position thereon, the opposite end portions of the sectional stem body will be exposed and project from opposite ends of the sleeve. are externally fashioned, so that one of the .projecting end portions forms a sectional mouth piece 16, while the other end portion forms a sectional shank 17 ada ted to be inserted in a socket in a pipe bow 18, and held in said socket by friction or otherwise, as by a screw thread connection. (See Fig. 7). The ex osed end portion of the stem body which as the shank 17, is preferably provided also with a sectional grip portion 19, here shown as a flange or enlargement having a milled or roughened eriphery adapted to be conveniently graspe between a thumb and finger during the operation of turning the stem to insert it in and remove it from the pipe bowl socket. The said grip portion 19 enables the stem to be inserted or re- 'moved -without disarranging the relative positions of the three members comprising said stem. The sleeve '13 is shown in. Figs.

1 and 2 as provided with a boss or projection 20, which'enables pressure lto be conveniently applied to the sleeve for the purpose of pressing it to and from its conining position.

endwise on to the stem from the.

The sections 12 of the stem body :i applied to the (pipe.

When the pipe stem is straight, the sleeve 13 is preferably' constructed of sheet metal, either in the form of a seamless tube (Fig. 3), or of a split tube (Fig. 5) having sufficient resilience to cause its contraction upon the stem sections.

In Fig. 4 I have shown in the stem sections 12 of curvcdform, the confining sleeve, here indicated by the numeral 130, being a helical wire coil adapted to fit the curvature and taper of the stem body, and confine the beyaring faces ol' the sections 12 closely against each other.

It will be seen that the sectional stem coini posed of the parts or pieces specified, is

adapted to be quickly'and conveniently removed from a pipe, and its )arts separated to permit the cleansing ofthe walls of the smoke duct, and is readily assembled and rc- The employment of a sin le elongate confining sleeve or member to old the longitudinal sections of the stem operatively related to each other, is an important art of my invention, said confining` member enig shorter than the stem sections,

, so that it enables the end portions of said sections to be utilized for the mouth piece and the bowl-engaging shank, as described, ,without the employment of additional pieces to provide' these portions. At the same time the connecting or clamping member is so elongated that 1t has an extended bearing on the external surfaces of the sections, and prevents any liability of the separation of the reciprocal bearing faces 14 at any part of the stem. When the conining member is made in the form of a sheet metal' tube, it covers the joint formed by the bearing faces of the stem along the greater portion of the length of the stem, thus reducing the possibility, of leakage between the sections to the minimum.

One ofthe sections 12 may have an offset rib 25 Withtapered sides, and the other secd tion, a groove with tapered sides tting the sides of the rib, the said tapered sides being firmly pressed together to reduce the possibility ol" leakage at the joint. One of the sections 12 may have dowel pins 21 (Fig. S) adapted to enter holes in the other section to secure proper registration,

In Fig. 10 l show the sections united by a dovetail rib 22- on one section, and a dovetail groovel in the other section, said rib and groove being a substitute for the sleeve 13, which in this case is omitted.

l claim:

1. A three-piece pipe stem composed ol' two stem sections including a shank ortion to enter the bowl of a )i )e and a mout 1 piece, and a single elongate sleeve which embraces the stem sections between their ends, said sleeve inclosing practically the entire length ol' the stem sections excepting the shank portion and the mouth piece. end, whereby the sleeve and the pipe bowl conjointly hold all parts of the meeting faces of the sections, including those of the mouth-piece end, in close contact with each other.

2. A three-piece pipe stem composed ol` two stem sectlons including a shank ortion to enter the bowl of a i e and a mout 1 piece, and a single elongated) sleeve which embraces the stem sections between their ends, said sleeve inclosing practically the entire length of the stem sections excepting the mouth piece end, the said .stem sections being ormedwith flanges near the shank portion whichenters the bowl, said flanges forming an annular grip portion.

In testimony whereof I have allxed 'my signature, in presence of two witnesses.

. GEORGE W. BOWERS.

Witnesses:

C. F. BROWN, P. W. PEzzETTr. 

